Hi folks,
I read somewhere that the em rule should preferably be prefixed with
a non-breakable space character ( ~ ), mainly for stylistic reasons,
however, there was no mention of a ~ suffix to ensure that a line
break doesn't occur immediately after the em dash. Would a
conscientious typesetter place a ~ on both sides of the em dash, or a
prefix ~ is the only stylistic requirement? Further, what would the
list think of the idea of using \mbox to make sure that a line break
doesn't appear on the left or either side of the em rule/
Thanks
Paul